<?php
/**
 * 作者：狐狸<foxis@qq.com>
 * 功能描述: Oauth2接口函数
 * @version $Id: jishigou_oauth2_client.class.php 5000 2013-11-13 01:43:24Z wuliyong $
 */

if(!defined('IN_JISHIGOU')) {
	exit('invalid request');
}

class jishigou_oauth2_client {

	var $client_id;

	var $client_secret;

	var $access_token;

	var $refresh_token;

	var $http_code;

	var $url;

	var $host = "";

	var $access_token_url = "";

	var $authorize_url = "";

	var $timeout = 30;

	var $connecttimeout = 30;

	var $ssl_verifypeer = FALSE;

	var $format = 'json';

	var $decode_json = TRUE;

	var $http_info;

	var $useragent = 'JishiGou OAuth2 Client v0.2';

	
	var $debug = FALSE;

	function accessTokenURL()  { return $this->access_token_url; }

	function authorizeURL()    { return $this->authorize_url; }

	function jishigou_oauth2_client() {
		;
	}

	function init($client_id, $client_secret, $access_token = NULL, $refresh_token = NULL) {
		$this->client_id = $client_id;
		$this->client_secret = $client_secret;
		$this->access_token = $access_token;
		$this->refresh_token = $refresh_token;
	}

	
	function getAuthorizeURL( $url, $response_type = 'code', $keys = array() ) {
		$params = array();
		$params['client_id'] = $this->client_id;
		$params['redirect_uri'] = $url;
		$params['response_type'] = $response_type;

				if($keys)
		{
			$ps = array('scope', 'state', 'display', 'forcelogin', 'language', );
			foreach($ps as $k)
			{
				if (isset($keys[$k]))
				{
					$v = $keys[$k];
					if($v)
					{
						$params[$k] = $v;
					}
				}
			}
		}

		return $this->_get_url($this->authorizeURL(), $params);
	}

	
	function getAccessToken( $type = 'code', $keys ) {
		$params = array();
		$params['client_id'] = $this->client_id;
		$params['client_secret'] = $this->client_secret;
		if ( $type === 'token' ) {
			$params['grant_type'] = 'refresh_token';
			$params['refresh_token'] = $keys['refresh_token'];
		} elseif ( $type === 'code' ) {
			$params['grant_type'] = 'authorization_code';
			$params['code'] = $keys['code'];
			$params['redirect_uri'] = $keys['redirect_uri'];
		} elseif ( $type === 'password' ) {
			$params['grant_type'] = 'password';
			$params['username'] = $keys['username'];
			$params['password'] = $keys['password'];
		} else {
					}

		$response = $this->oAuthRequest($this->accessTokenURL(), 'POST', $params);
		$token = json_decode($response, true);
		if ( is_array($token) && !isset($token['error']) ) {
			$this->access_token = $token['access_token'];
			$this->refresh_token = $token['refresh_token'];
		} else {
					}
		return $token;
	}

	
	function base64decode($str) {
		return base64_decode(strtr($str.str_repeat('=',(4 - strlen($str) % 4)), '-_', '+/'));
	}

	
	function get($url, $parameters = array()) {
		$response = $this->oAuthRequest($url, 'GET', $parameters);
		if ($this->format === 'json' && $this->decode_json) {
			return json_decode($response, true);
		}
		return $response;
	}

	
	function post($url, $parameters = array() , $multi = false) {
		$response = $this->oAuthRequest($url, 'POST', $parameters , $multi );
		if ($this->format === 'json' && $this->decode_json) {
			return json_decode($response, true);
		}
		return $response;
	}

	
	function delete($url, $parameters = array()) {
		$response = $this->oAuthRequest($url, 'DELETE', $parameters);
		if ($this->format === 'json' && $this->decode_json) {
			return json_decode($response, true);
		}
		return $response;
	}

	
	function oAuthRequest($url, $method, $parameters , $multi = false) {

		if (strrpos($url, 'https:/'.'/') !== 0 && strrpos($url, 'http:/'.'/') !== 0) {
			$url = "{$this->host}{$url}.{$this->format}";
		}

		switch ($method) {
			case 'GET':
				$url = $this->_get_url($url, $parameters);
				return $this->http($url, 'GET');
			default:
				return $this->http($url, $method, $parameters, $multi);
		}
	}

	function http_socket($url, $method, $postfields = NULL, $multi = false)
	{
		jext('http_client');

		$http = new Http_Client($this->debug);
		$http->setHeader('user-agent', $this->useragent);
		if($this->access_token)
		{
			$http->setHeader('authorization', 'OAuth2 ' . $this->access_token);
		}
		$http->setHeader('API-RemoteIP', $GLOBALS['_J']['client_ip']);

		if('POST' == $method)
		{
			if($postfields && is_array($postfields))
			{
				if($multi && isset($postfields['pic'])) {
					if(is_array($postfields['pic'])) {
						$http->addPostFile('pic', $postfields['pic']['name'], $postfields['pic']['data']);
					} else {
						$http->addPostFile('pic', $postfields['pic']);
					}
					unset($postfields['pic']);
				}
				foreach($postfields as $k=>$v)
				{
					$http->addPostField($k, $v);
				}
			}

			return $http->Post($url, false);
		}
		else
		{
			if($postfields)
			{
				$url = $this->_get_url($url, $postfields);
			}

			return $http->Get($url, false);
		}
	}

	
	function http($url, $method, $postfields = NULL, $multi = false) {
		if(!function_exists('curl_exec') || ($multi && isset($postfields['pic']))) {
			return $this->http_socket($url, $method, $postfields, $multi);
		}

		$this->http_info = array();
		$ci = curl_init();
		
		curl_setopt($ci, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
		curl_setopt($ci, CURLOPT_USERAGENT, $this->useragent);
		curl_setopt($ci, CURLOPT_CONNECTTIMEOUT, $this->connecttimeout);
		curl_setopt($ci, CURLOPT_TIMEOUT, $this->timeout);
		curl_setopt($ci, CURLOPT_RETURNTRANSFER, TRUE);
		curl_setopt($ci, CURLOPT_ENCODING, "");
		curl_setopt($ci, CURLOPT_SSL_VERIFYPEER, $this->ssl_verifypeer);
		curl_setopt($ci, CURLOPT_HEADERFUNCTION, array($this, 'getHeader'));
		curl_setopt($ci, CURLOPT_HEADER, FALSE);

		switch ($method) {
			case 'POST':
				curl_setopt($ci, CURLOPT_POST, TRUE);
				if (!empty($postfields)) {
					$postfields = $this->_get_url('', $postfields);
					curl_setopt($ci, CURLOPT_POSTFIELDS, $postfields);
					$this->postdata = $postfields;
				}
				break;
			case 'DELETE':
				curl_setopt($ci, CURLOPT_CUSTOMREQUEST, 'DELETE');
				if (!empty($postfields)) {
					$url = $this->_get_url($url, $postfields);
				}
		}

		if ( isset($this->access_token) && $this->access_token ) {
			$headers[] = "Authorization: OAuth2 ".$this->access_token;
		}

		$headers[] = "API-RemoteIP: " . $GLOBALS['_J']['client_ip'];
		curl_setopt($ci, CURLOPT_URL, $url );
		curl_setopt($ci, CURLOPT_HTTPHEADER, $headers );
		curl_setopt($ci, CURLINFO_HEADER_OUT, TRUE );

		$response = curl_exec($ci);
		$this->http_code = curl_getinfo($ci, CURLINFO_HTTP_CODE);
		$this->http_info = array_merge($this->http_info, curl_getinfo($ci));
		$this->url = $url;

		if ($this->debug) {
			echo "=====post data======\r\n";
			var_dump($postfields);

			echo '=====info====='."\r\n";
			print_r( curl_getinfo($ci) );

			echo '=====$response====='."\r\n";
			print_r( $response );
		}
		curl_close ($ci);
		return $response;
	}

	
	function getHeader($ch, $header) {
		$i = strpos($header, ':');
		if (!empty($i)) {
			$key = str_replace('-', '_', strtolower(substr($header, 0, $i)));
			$value = trim(substr($header, $i + 2));
			$this->http_header[$key] = $value;
		}
		return strlen($header);
	}

	function _get_url($url = '', $p = null)
	{
		if($p)
		{
			$sep = '';

			if($url)
			{
				$sep = (false !== strpos($url, '?') ? '&' : '?');
			}

			if(is_array($p))
			{
				$url .= $sep . http_build_query($p);
			}
			else
			{
				$url .= $sep . $p;
			}
		}

		return $url;
	}

	function _build_http_query_multi($params) {
		if (!$params) return '';

		uksort($params, 'strcmp');

		$pairs = array();

		$this->boundary = $boundary = uniqid('------------------');
		$MPboundary = '--'.$boundary;
		$endMPboundary = $MPboundary. '--';
		$multipartbody = '';

		foreach ($params as $parameter => $value) {

			if( 'pic' == $parameter ) {
				if(is_array($value)) {
					$filename = $value['name'];
					$content = $value['data'];
				} else {
					$array = explode( '?', basename( $value ) );
					$filename = $array[0];
					$content = file_get_contents($value);
				}

				$multipartbody .= $MPboundary . "\r\n";
				$multipartbody .= 'Content-Disposition: form-data; name="' . $parameter . '"; filename="' . $filename . '"'. "\r\n";
				$multipartbody .= "Content-Type: image/unknown\r\n\r\n";
				$multipartbody .= $content. "\r\n";
			} else {
				$multipartbody .= $MPboundary . "\r\n";
				$multipartbody .= 'content-disposition: form-data; name="' . $parameter . "\"\r\n\r\n";
				$multipartbody .= $value."\r\n";
			}

		}

		$multipartbody .= $endMPboundary;
		return $multipartbody;
	}
}



?>
